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@@ -106,7 +106,6 @@
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#include <net/xfrm.h>
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#include <linux/highmem.h>
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#include <linux/init.h>
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-#include <linux/kmod.h>
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#include <linux/module.h>
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#include <linux/netpoll.h>
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#include <linux/rcupdate.h>
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@@ -132,7 +131,6 @@
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#include <linux/pci.h>
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#include <linux/inetdevice.h>
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#include <linux/cpu_rmap.h>
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-#include <linux/net_tstamp.h>
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#include <linux/static_key.h>
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#include "net-sysfs.h"
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@@ -1226,36 +1224,6 @@ void netdev_notify_peers(struct net_device *dev)
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}
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EXPORT_SYMBOL(netdev_notify_peers);
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-/**
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- * dev_load - load a network module
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- * @net: the applicable net namespace
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- * @name: name of interface
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- *
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- * If a network interface is not present and the process has suitable
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- * privileges this function loads the module. If module loading is not
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- * available in this kernel then it becomes a nop.
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- */
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-
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-void dev_load(struct net *net, const char *name)
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-{
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- struct net_device *dev;
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- int no_module;
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-
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- rcu_read_lock();
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- dev = dev_get_by_name_rcu(net, name);
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- rcu_read_unlock();
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-
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- no_module = !dev;
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- if (no_module && capable(CAP_NET_ADMIN))
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- no_module = request_module("netdev-%s", name);
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- if (no_module && capable(CAP_SYS_MODULE)) {
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- if (!request_module("%s", name))
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- pr_warn("Loading kernel module for a network device with CAP_SYS_MODULE (deprecated). Use CAP_NET_ADMIN and alias netdev-%s instead.\n",
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- name);
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- }
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-}
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-EXPORT_SYMBOL(dev_load);
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-
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static int __dev_open(struct net_device *dev)
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{
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const struct net_device_ops *ops = dev->netdev_ops;
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@@ -1645,57 +1613,6 @@ static inline void net_timestamp_set(struct sk_buff *skb)
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__net_timestamp(SKB); \
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} \
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-static int net_hwtstamp_validate(struct ifreq *ifr)
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-{
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- struct hwtstamp_config cfg;
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- enum hwtstamp_tx_types tx_type;
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- enum hwtstamp_rx_filters rx_filter;
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- int tx_type_valid = 0;
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- int rx_filter_valid = 0;
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-
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- if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg)))
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- return -EFAULT;
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-
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- if (cfg.flags) /* reserved for future extensions */
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- return -EINVAL;
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-
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- tx_type = cfg.tx_type;
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- rx_filter = cfg.rx_filter;
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-
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- switch (tx_type) {
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- case HWTSTAMP_TX_OFF:
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- case HWTSTAMP_TX_ON:
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- case HWTSTAMP_TX_ONESTEP_SYNC:
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- tx_type_valid = 1;
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- break;
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- }
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-
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- switch (rx_filter) {
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- case HWTSTAMP_FILTER_NONE:
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- case HWTSTAMP_FILTER_ALL:
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- case HWTSTAMP_FILTER_SOME:
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- case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
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- case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
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- case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
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- case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
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- case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
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- case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
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- case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
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- case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
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- case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
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- case HWTSTAMP_FILTER_PTP_V2_EVENT:
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- case HWTSTAMP_FILTER_PTP_V2_SYNC:
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- case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
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- rx_filter_valid = 1;
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- break;
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- }
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-
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- if (!tx_type_valid || !rx_filter_valid)
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- return -ERANGE;
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-
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- return 0;
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-}
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-
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static inline bool is_skb_forwardable(struct net_device *dev,
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struct sk_buff *skb)
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{
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@@ -4300,127 +4217,6 @@ softnet_break:
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goto out;
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}
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-static gifconf_func_t *gifconf_list[NPROTO];
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-
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-/**
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- * register_gifconf - register a SIOCGIF handler
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- * @family: Address family
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- * @gifconf: Function handler
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- *
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- * Register protocol dependent address dumping routines. The handler
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- * that is passed must not be freed or reused until it has been replaced
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- * by another handler.
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- */
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-int register_gifconf(unsigned int family, gifconf_func_t *gifconf)
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-{
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- if (family >= NPROTO)
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- return -EINVAL;
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- gifconf_list[family] = gifconf;
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- return 0;
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-}
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-EXPORT_SYMBOL(register_gifconf);
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-
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-
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-/*
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- * Map an interface index to its name (SIOCGIFNAME)
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- */
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-
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-/*
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- * We need this ioctl for efficient implementation of the
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- * if_indextoname() function required by the IPv6 API. Without
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- * it, we would have to search all the interfaces to find a
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- * match. --pb
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- */
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-
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-static int dev_ifname(struct net *net, struct ifreq __user *arg)
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-{
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- struct net_device *dev;
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- struct ifreq ifr;
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- unsigned seq;
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-
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- /*
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- * Fetch the caller's info block.
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- */
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-
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- if (copy_from_user(&ifr, arg, sizeof(struct ifreq)))
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- return -EFAULT;
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-
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-retry:
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- seq = read_seqcount_begin(&devnet_rename_seq);
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- rcu_read_lock();
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- dev = dev_get_by_index_rcu(net, ifr.ifr_ifindex);
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- if (!dev) {
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- rcu_read_unlock();
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- return -ENODEV;
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- }
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-
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- strcpy(ifr.ifr_name, dev->name);
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- rcu_read_unlock();
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- if (read_seqcount_retry(&devnet_rename_seq, seq))
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- goto retry;
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-
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- if (copy_to_user(arg, &ifr, sizeof(struct ifreq)))
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- return -EFAULT;
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- return 0;
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-}
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-
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-/*
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- * Perform a SIOCGIFCONF call. This structure will change
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- * size eventually, and there is nothing I can do about it.
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- * Thus we will need a 'compatibility mode'.
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- */
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-
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-static int dev_ifconf(struct net *net, char __user *arg)
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-{
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- struct ifconf ifc;
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- struct net_device *dev;
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- char __user *pos;
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- int len;
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- int total;
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- int i;
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-
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- /*
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- * Fetch the caller's info block.
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- */
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-
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- if (copy_from_user(&ifc, arg, sizeof(struct ifconf)))
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- return -EFAULT;
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-
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- pos = ifc.ifc_buf;
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- len = ifc.ifc_len;
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-
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- /*
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- * Loop over the interfaces, and write an info block for each.
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- */
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-
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- total = 0;
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- for_each_netdev(net, dev) {
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- for (i = 0; i < NPROTO; i++) {
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- if (gifconf_list[i]) {
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- int done;
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- if (!pos)
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- done = gifconf_list[i](dev, NULL, 0);
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- else
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- done = gifconf_list[i](dev, pos + total,
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- len - total);
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- if (done < 0)
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- return -EFAULT;
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- total += done;
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- }
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- }
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- }
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-
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- /*
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- * All done. Write the updated control block back to the caller.
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- */
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- ifc.ifc_len = total;
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-
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- /*
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- * Both BSD and Solaris return 0 here, so we do too.
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- */
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- return copy_to_user(arg, &ifc, sizeof(struct ifconf)) ? -EFAULT : 0;
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-}
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-
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#ifdef CONFIG_PROC_FS
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#define BUCKET_SPACE (32 - NETDEV_HASHBITS - 1)
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@@ -5381,375 +5177,6 @@ int dev_change_carrier(struct net_device *dev, bool new_carrier)
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}
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EXPORT_SYMBOL(dev_change_carrier);
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-/*
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- * Perform the SIOCxIFxxx calls, inside rcu_read_lock()
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- */
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-static int dev_ifsioc_locked(struct net *net, struct ifreq *ifr, unsigned int cmd)
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-{
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- int err;
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- struct net_device *dev = dev_get_by_name_rcu(net, ifr->ifr_name);
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-
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- if (!dev)
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- return -ENODEV;
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-
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- switch (cmd) {
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- case SIOCGIFFLAGS: /* Get interface flags */
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- ifr->ifr_flags = (short) dev_get_flags(dev);
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- return 0;
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-
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- case SIOCGIFMETRIC: /* Get the metric on the interface
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- (currently unused) */
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- ifr->ifr_metric = 0;
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- return 0;
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-
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- case SIOCGIFMTU: /* Get the MTU of a device */
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- ifr->ifr_mtu = dev->mtu;
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- return 0;
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-
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- case SIOCGIFHWADDR:
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- if (!dev->addr_len)
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- memset(ifr->ifr_hwaddr.sa_data, 0, sizeof ifr->ifr_hwaddr.sa_data);
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- else
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- memcpy(ifr->ifr_hwaddr.sa_data, dev->dev_addr,
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- min(sizeof ifr->ifr_hwaddr.sa_data, (size_t) dev->addr_len));
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- ifr->ifr_hwaddr.sa_family = dev->type;
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- return 0;
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-
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- case SIOCGIFSLAVE:
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- err = -EINVAL;
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- break;
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-
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- case SIOCGIFMAP:
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- ifr->ifr_map.mem_start = dev->mem_start;
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- ifr->ifr_map.mem_end = dev->mem_end;
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- ifr->ifr_map.base_addr = dev->base_addr;
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- ifr->ifr_map.irq = dev->irq;
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- ifr->ifr_map.dma = dev->dma;
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- ifr->ifr_map.port = dev->if_port;
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- return 0;
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-
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- case SIOCGIFINDEX:
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- ifr->ifr_ifindex = dev->ifindex;
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- return 0;
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-
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- case SIOCGIFTXQLEN:
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- ifr->ifr_qlen = dev->tx_queue_len;
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- return 0;
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-
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- default:
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- /* dev_ioctl() should ensure this case
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- * is never reached
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- */
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- WARN_ON(1);
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- err = -ENOTTY;
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- break;
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-
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- }
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- return err;
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-}
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-
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-/*
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- * Perform the SIOCxIFxxx calls, inside rtnl_lock()
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- */
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-static int dev_ifsioc(struct net *net, struct ifreq *ifr, unsigned int cmd)
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-{
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- int err;
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- struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name);
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- const struct net_device_ops *ops;
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-
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- if (!dev)
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- return -ENODEV;
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-
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- ops = dev->netdev_ops;
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-
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- switch (cmd) {
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- case SIOCSIFFLAGS: /* Set interface flags */
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- return dev_change_flags(dev, ifr->ifr_flags);
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-
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- case SIOCSIFMETRIC: /* Set the metric on the interface
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- (currently unused) */
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- return -EOPNOTSUPP;
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-
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- case SIOCSIFMTU: /* Set the MTU of a device */
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- return dev_set_mtu(dev, ifr->ifr_mtu);
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-
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- case SIOCSIFHWADDR:
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- return dev_set_mac_address(dev, &ifr->ifr_hwaddr);
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-
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- case SIOCSIFHWBROADCAST:
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- if (ifr->ifr_hwaddr.sa_family != dev->type)
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- return -EINVAL;
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- memcpy(dev->broadcast, ifr->ifr_hwaddr.sa_data,
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- min(sizeof ifr->ifr_hwaddr.sa_data, (size_t) dev->addr_len));
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- call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
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- return 0;
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-
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- case SIOCSIFMAP:
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- if (ops->ndo_set_config) {
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- if (!netif_device_present(dev))
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- return -ENODEV;
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- return ops->ndo_set_config(dev, &ifr->ifr_map);
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- }
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- return -EOPNOTSUPP;
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-
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- case SIOCADDMULTI:
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- if (!ops->ndo_set_rx_mode ||
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- ifr->ifr_hwaddr.sa_family != AF_UNSPEC)
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- return -EINVAL;
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- if (!netif_device_present(dev))
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- return -ENODEV;
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- return dev_mc_add_global(dev, ifr->ifr_hwaddr.sa_data);
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-
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- case SIOCDELMULTI:
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- if (!ops->ndo_set_rx_mode ||
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- ifr->ifr_hwaddr.sa_family != AF_UNSPEC)
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- return -EINVAL;
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- if (!netif_device_present(dev))
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- return -ENODEV;
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- return dev_mc_del_global(dev, ifr->ifr_hwaddr.sa_data);
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-
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- case SIOCSIFTXQLEN:
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- if (ifr->ifr_qlen < 0)
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- return -EINVAL;
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- dev->tx_queue_len = ifr->ifr_qlen;
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- return 0;
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-
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- case SIOCSIFNAME:
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- ifr->ifr_newname[IFNAMSIZ-1] = '\0';
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- return dev_change_name(dev, ifr->ifr_newname);
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-
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- case SIOCSHWTSTAMP:
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- err = net_hwtstamp_validate(ifr);
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- if (err)
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- return err;
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- /* fall through */
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-
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- /*
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- * Unknown or private ioctl
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- */
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- default:
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- if ((cmd >= SIOCDEVPRIVATE &&
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- cmd <= SIOCDEVPRIVATE + 15) ||
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- cmd == SIOCBONDENSLAVE ||
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- cmd == SIOCBONDRELEASE ||
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- cmd == SIOCBONDSETHWADDR ||
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- cmd == SIOCBONDSLAVEINFOQUERY ||
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- cmd == SIOCBONDINFOQUERY ||
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- cmd == SIOCBONDCHANGEACTIVE ||
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- cmd == SIOCGMIIPHY ||
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- cmd == SIOCGMIIREG ||
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- cmd == SIOCSMIIREG ||
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- cmd == SIOCBRADDIF ||
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- cmd == SIOCBRDELIF ||
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- cmd == SIOCSHWTSTAMP ||
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- cmd == SIOCWANDEV) {
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- err = -EOPNOTSUPP;
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- if (ops->ndo_do_ioctl) {
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- if (netif_device_present(dev))
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- err = ops->ndo_do_ioctl(dev, ifr, cmd);
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- else
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- err = -ENODEV;
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- }
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|
- } else
|
|
|
- err = -EINVAL;
|
|
|
-
|
|
|
- }
|
|
|
- return err;
|
|
|
-}
|
|
|
-
|
|
|
-/*
|
|
|
- * This function handles all "interface"-type I/O control requests. The actual
|
|
|
- * 'doing' part of this is dev_ifsioc above.
|
|
|
- */
|
|
|
-
|
|
|
-/**
|
|
|
- * dev_ioctl - network device ioctl
|
|
|
- * @net: the applicable net namespace
|
|
|
- * @cmd: command to issue
|
|
|
- * @arg: pointer to a struct ifreq in user space
|
|
|
- *
|
|
|
- * Issue ioctl functions to devices. This is normally called by the
|
|
|
- * user space syscall interfaces but can sometimes be useful for
|
|
|
- * other purposes. The return value is the return from the syscall if
|
|
|
- * positive or a negative errno code on error.
|
|
|
- */
|
|
|
-
|
|
|
-int dev_ioctl(struct net *net, unsigned int cmd, void __user *arg)
|
|
|
-{
|
|
|
- struct ifreq ifr;
|
|
|
- int ret;
|
|
|
- char *colon;
|
|
|
-
|
|
|
- /* One special case: SIOCGIFCONF takes ifconf argument
|
|
|
- and requires shared lock, because it sleeps writing
|
|
|
- to user space.
|
|
|
- */
|
|
|
-
|
|
|
- if (cmd == SIOCGIFCONF) {
|
|
|
- rtnl_lock();
|
|
|
- ret = dev_ifconf(net, (char __user *) arg);
|
|
|
- rtnl_unlock();
|
|
|
- return ret;
|
|
|
- }
|
|
|
- if (cmd == SIOCGIFNAME)
|
|
|
- return dev_ifname(net, (struct ifreq __user *)arg);
|
|
|
-
|
|
|
- if (copy_from_user(&ifr, arg, sizeof(struct ifreq)))
|
|
|
- return -EFAULT;
|
|
|
-
|
|
|
- ifr.ifr_name[IFNAMSIZ-1] = 0;
|
|
|
-
|
|
|
- colon = strchr(ifr.ifr_name, ':');
|
|
|
- if (colon)
|
|
|
- *colon = 0;
|
|
|
-
|
|
|
- /*
|
|
|
- * See which interface the caller is talking about.
|
|
|
- */
|
|
|
-
|
|
|
- switch (cmd) {
|
|
|
- /*
|
|
|
- * These ioctl calls:
|
|
|
- * - can be done by all.
|
|
|
- * - atomic and do not require locking.
|
|
|
- * - return a value
|
|
|
- */
|
|
|
- case SIOCGIFFLAGS:
|
|
|
- case SIOCGIFMETRIC:
|
|
|
- case SIOCGIFMTU:
|
|
|
- case SIOCGIFHWADDR:
|
|
|
- case SIOCGIFSLAVE:
|
|
|
- case SIOCGIFMAP:
|
|
|
- case SIOCGIFINDEX:
|
|
|
- case SIOCGIFTXQLEN:
|
|
|
- dev_load(net, ifr.ifr_name);
|
|
|
- rcu_read_lock();
|
|
|
- ret = dev_ifsioc_locked(net, &ifr, cmd);
|
|
|
- rcu_read_unlock();
|
|
|
- if (!ret) {
|
|
|
- if (colon)
|
|
|
- *colon = ':';
|
|
|
- if (copy_to_user(arg, &ifr,
|
|
|
- sizeof(struct ifreq)))
|
|
|
- ret = -EFAULT;
|
|
|
- }
|
|
|
- return ret;
|
|
|
-
|
|
|
- case SIOCETHTOOL:
|
|
|
- dev_load(net, ifr.ifr_name);
|
|
|
- rtnl_lock();
|
|
|
- ret = dev_ethtool(net, &ifr);
|
|
|
- rtnl_unlock();
|
|
|
- if (!ret) {
|
|
|
- if (colon)
|
|
|
- *colon = ':';
|
|
|
- if (copy_to_user(arg, &ifr,
|
|
|
- sizeof(struct ifreq)))
|
|
|
- ret = -EFAULT;
|
|
|
- }
|
|
|
- return ret;
|
|
|
-
|
|
|
- /*
|
|
|
- * These ioctl calls:
|
|
|
- * - require superuser power.
|
|
|
- * - require strict serialization.
|
|
|
- * - return a value
|
|
|
- */
|
|
|
- case SIOCGMIIPHY:
|
|
|
- case SIOCGMIIREG:
|
|
|
- case SIOCSIFNAME:
|
|
|
- if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
|
|
|
- return -EPERM;
|
|
|
- dev_load(net, ifr.ifr_name);
|
|
|
- rtnl_lock();
|
|
|
- ret = dev_ifsioc(net, &ifr, cmd);
|
|
|
- rtnl_unlock();
|
|
|
- if (!ret) {
|
|
|
- if (colon)
|
|
|
- *colon = ':';
|
|
|
- if (copy_to_user(arg, &ifr,
|
|
|
- sizeof(struct ifreq)))
|
|
|
- ret = -EFAULT;
|
|
|
- }
|
|
|
- return ret;
|
|
|
-
|
|
|
- /*
|
|
|
- * These ioctl calls:
|
|
|
- * - require superuser power.
|
|
|
- * - require strict serialization.
|
|
|
- * - do not return a value
|
|
|
- */
|
|
|
- case SIOCSIFMAP:
|
|
|
- case SIOCSIFTXQLEN:
|
|
|
- if (!capable(CAP_NET_ADMIN))
|
|
|
- return -EPERM;
|
|
|
- /* fall through */
|
|
|
- /*
|
|
|
- * These ioctl calls:
|
|
|
- * - require local superuser power.
|
|
|
- * - require strict serialization.
|
|
|
- * - do not return a value
|
|
|
- */
|
|
|
- case SIOCSIFFLAGS:
|
|
|
- case SIOCSIFMETRIC:
|
|
|
- case SIOCSIFMTU:
|
|
|
- case SIOCSIFHWADDR:
|
|
|
- case SIOCSIFSLAVE:
|
|
|
- case SIOCADDMULTI:
|
|
|
- case SIOCDELMULTI:
|
|
|
- case SIOCSIFHWBROADCAST:
|
|
|
- case SIOCSMIIREG:
|
|
|
- case SIOCBONDENSLAVE:
|
|
|
- case SIOCBONDRELEASE:
|
|
|
- case SIOCBONDSETHWADDR:
|
|
|
- case SIOCBONDCHANGEACTIVE:
|
|
|
- case SIOCBRADDIF:
|
|
|
- case SIOCBRDELIF:
|
|
|
- case SIOCSHWTSTAMP:
|
|
|
- if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
|
|
|
- return -EPERM;
|
|
|
- /* fall through */
|
|
|
- case SIOCBONDSLAVEINFOQUERY:
|
|
|
- case SIOCBONDINFOQUERY:
|
|
|
- dev_load(net, ifr.ifr_name);
|
|
|
- rtnl_lock();
|
|
|
- ret = dev_ifsioc(net, &ifr, cmd);
|
|
|
- rtnl_unlock();
|
|
|
- return ret;
|
|
|
-
|
|
|
- case SIOCGIFMEM:
|
|
|
- /* Get the per device memory space. We can add this but
|
|
|
- * currently do not support it */
|
|
|
- case SIOCSIFMEM:
|
|
|
- /* Set the per device memory buffer space.
|
|
|
- * Not applicable in our case */
|
|
|
- case SIOCSIFLINK:
|
|
|
- return -ENOTTY;
|
|
|
-
|
|
|
- /*
|
|
|
- * Unknown or private ioctl.
|
|
|
- */
|
|
|
- default:
|
|
|
- if (cmd == SIOCWANDEV ||
|
|
|
- (cmd >= SIOCDEVPRIVATE &&
|
|
|
- cmd <= SIOCDEVPRIVATE + 15)) {
|
|
|
- dev_load(net, ifr.ifr_name);
|
|
|
- rtnl_lock();
|
|
|
- ret = dev_ifsioc(net, &ifr, cmd);
|
|
|
- rtnl_unlock();
|
|
|
- if (!ret && copy_to_user(arg, &ifr,
|
|
|
- sizeof(struct ifreq)))
|
|
|
- ret = -EFAULT;
|
|
|
- return ret;
|
|
|
- }
|
|
|
- /* Take care of Wireless Extensions */
|
|
|
- if (cmd >= SIOCIWFIRST && cmd <= SIOCIWLAST)
|
|
|
- return wext_handle_ioctl(net, &ifr, cmd, arg);
|
|
|
- return -ENOTTY;
|
|
|
- }
|
|
|
-}
|
|
|
-
|
|
|
-
|
|
|
/**
|
|
|
* dev_new_index - allocate an ifindex
|
|
|
* @net: the applicable net namespace
|
Cong Wang